Metallic packing for piston-rods.



No. 746,810. Patentes December 15, 1903.

NITE Sterns AAralar OFFICE.`

WILLIAM FODEN, OF ROCK FERRY, ENGLND, ASYSIGNOR TO THE UNITED KINGDOMSELF-ADJUSTING ANTI-FRICTION METALLIC PACKING SYNDI- OATE, LIMITED, OFLIVERPOOL, ENGLAND.

METALLIC PACKING FOR PlSTON-RODS.

.YSPECIFIGAT'LUN formingpart of Letters Patent No. 746,810, datedDecember 15,1903.

Application led February 25, 1903. Serial No.145l036. (No model.) A

T all whom t may 00u/067%.' with the base of `the triangle against thein- Be it known that LWILLIAM FODEN,asubside of the walls of thestuffing-box l. A ject of the King of Great Britain, residing inconsiderable portion of the section is cut Rock Ferry, in the county ofChester, Eng, away by turning or boring, as the case may land, haveinvented certain new and useful be, grooves or recesses 7 8 o n the sideof the 55 Improvementsin `Metallic PackingA for Pistonring, which formsthe base in the triangular Rods and the Like, of which the following isvsection. In conjunction with the main rings a specification. auxiliaryrings 9 l0 are or may be used. The In metallic packing as commonly madethe rings 9 are of bowed cross-section, and they to packing-rings arecut at one or more places 'dt within the recesses 7, the convexity being6o to allow the rings to close on the rod by relaturned towardthe baseof the triangle and the tive movement of the ends as the rubbingchordparallel thereto, the ends of the lune or surfaces wear away. As thecontinuity of bowed section abutting against the sides of the ring isthus broken, various devices are the recess. Fig. I shows aseries oftheseinside I5 used to prevent or minimize leakage vat the and outsiderings arranged alternately in a 65 gaps or joints, and the rings arealways arstuffing-box and confined between the neckranged in thestufling-loox so as to break bush 2 and the gland 3. It will be seenthat joint. Notwithstanding this the uid often on screwing up the gland3 axial pressure is passes the joints ring by ring, causing the appliedand transmitted from ring to ring zo packing to blow, this being moreespecially through the abutting oblique faces, which ac- 7o so in thecase of liquids. curatelyN agree. The effect of this will be to Theobject of the present invention is to cause the rings to spring at thebottom of the obviate this defect by so modifying the crossrecesses 7and 8, where the metal is comparasectional form of the rings that thenecessary tively thin, so increasing the radial width of radialadaptation to compensate for wear is the rings and giving the necessaryradial pres- 75 obtained without the necessity for any gaps sureinwardly against the rod and outwardly or joints in the rings, so thatthe latter can against the walls of the stung-box 1 to combe madecontinuous where the form of the pensatefor the eftect of wear. Theclosing rod permits, and in cases Where the rings up of the sides of therecesses produces a 3o have to be made in parts in order to be fittedsimilar result in the case of the auxiliary 8o on a rod with swelledends the adjacent ends rings 9 l0, increasing their curvature and of theparts can be mechanically fitted and forcing their convex surfacesagainst the side butted close together, so as to be duid-tight. of therod 6 or stufng-box l, as the case may I have illustrated my inventionin the acbe. companying drawings, in which-ed Instead of making theauxiliary rings of 85 Figure I is a longitudinal section showing bowcross-section 9 l may form them of more asolid form of packingconstructed accordor less rectangular cross-section, which may ing tothis invention, and Fig. II a longitualso be recessed in the mannerpreviously dedinal section through a stuffing-box fitted scribed or asshown at l0, Fig. I, or the 4o with a oating packing. main rings may begrooved and used alone 9o The stuffing-box l is provided with theWithout auxiliary rings, as shown at 8. The usual neck-bush 2 and gland3, between which rings are made of any suitable metal or alloy, arelocated the packing-rings 4 5. The crossas white-metal, bronze, brass,or the like. section of the rings is an isosoeles triangle In the caseof a floating packing, as shown with the vertex cut off by a lineparallel to in Fig. II, one or more rings Ll are arranged 95 the basewhich is perpendicular to the plane in casings ll free to move laterallybya limof the ring. The rings are of two kindsitod amount in thestuffing-box, and the necinside rings l, with the base of thecrossessary axial pressure is exerted by or transsectioual trianglelying on the inside of the mitted through a spring l2 after the manner5o ring next the rod 6, and outside rings 5, commento sucharrangements.- roo Having now fully described my invention, I

what I claim, and desire to secure by Letters Patent, is-

1. In combination with a rod, a stungbox and a gland; a series ofpacking-:rings having beveled sides the bases of the rings facing inopposite directions and recesses in the said oppositely-facingbases,substantially as described.

2. In combination with a rod, a stuffingbox and a gland; a series ofpacking-rings having beveled sides the bases of the rings facing inopposite directions, recesses in the said oppositely-facing bases and aseries of rings located in the said recesses.

3. In combination with a rod, a stuffingbox and a gland; a series ofpacking-rings having beveled sides the bases of the said rings facing inopposite directions, recesses in the said oppositely-facing bases and aseries of rings of substantially similar shape located in an invertedposition in the said recesses, substantially as described.

4L. In combination with the rod, the stuffingbox and the gland, ringshaving beveled sides and an internal recess, and a spring to provideaxial pressure; substantially as described.

5. In combination with the rod, the stuffingbox and the gland; a pair ofsleeves,- rings having beveled sides and an internal recess, locatedwithin the said sleeves, and an interposed spring to provide axialpressure; substantially as described.

6. In combination, the rod, the stuffingbox, tlle gland, the sleeves,the beveled recessed rings Within the sleeves, the beveled recessedrings located in an inverted position within the recesses of the saidrings, and an interposed spring forcing the sleeves against their endbearings by pressure transmitted through the rings; substantially asdescribed.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing -Witnesses.

WILLIAM FODEN.

Witnesses:

J. E. LLOYD BARNES, JOSEPH E. HIRsT.

